Which Oceanic server for purely pvp? (horde)

Am lookign to server transfer away from a PvE realm as the PvP scene is atrocious.

I'm chasing suggestions for other realms which may be good to move to for PvP (arena and rated bgs).

Have mates at Frostmourne, however Horde side there seems extremely outnumbered and there doesn't seem to be a huge PvP scene there tbh. I'm looking ideally for somewhere with guilds I can join and grind out battleground rating with etc.